Driving-hood for piles.



R. H. ANNISON. DRIVING HOOD FOR PILES. APPLICATION FILED FEB. 27, 1914.

1,140,558, Patented May 25, 191.5.

RICHARD HENRY ANNISON, OF LONDON, ENGLAND.

DRIVING-HOOD FOR FILES.

To all whom it may concern:

Be it known that I, RICHARD HENRY AN- NISON, a subject of the King of England, residing at 16 Water Lane, Great Tower Street, London, England, have invented certain new and useful Improvements in Driving-Hoods for Piles; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to caps or dollies for driving piles or other constructural members and refers more particularly to devices for driving irregularly shaped piles or piling and sheeting members of wood, steel or reinforced concrete or other material.

It is found in practice with the ordinary cap or dolly when used with members of irregular shape that although the blow may be delivered centrally upon the head of the pile or the like either directly or upon a dolly or striking plate interposed between the constructional member or members to be driven and the hammer or monkey, there is a tendency for the pile or other member, since it presents more resistance to driving upon one side of thecentral line than on the other, to descend faster upon one side than the other thus forcing such members out of the true perpendicular line.

According to my invention I provide a cap or striking plate, which is formed or (provided with a part adapted to receive the blow of the hammer or monkey, such part not being located symmetrically with respect to the part of the device which transmits 4c |bers to be driven. This latter part may either be formed with or adjustable with respect to the part of the device for receiving the blow. In this way by suitably shaping the driving plate or cap or equivalent device or by suitably adjusting the part upon which the blow is delivered with respect thereto, I am enabled to transmit the blow to the member or members to be driven in such a way that there is no {tendency to drive them out of the perpendicular, the resultant force of the blow being transmitted in the line of resistance to the driving of the member or members. Where the part upon which the blow is to \be delivered is formed with the plate or cap,

I prefer to furnish a box or the like for Specification of Letters Patent.

the blow to the member or mem Patented May 25, 1915.

Application filed February 27, 1914. Serial No. 821,458.

receiving the ordinary block, dolly or its equivalent. In other cases the portion carrying the dolly or the like may be made separate from the driving plate or cap and adapted to be slid or adjusted with respect thereto in order to enable the blow to be transmitted as required.

The cap or striking plate may be provided or formed with fillets of steel or other suitable material in a known manner, so shaped and arranged as to fit closely to the contour of the constructural member or members which are to be driven, or in the case of reinforced concrete or similar constructional members the plate or driving cap may be formed also in a known manner with a box shaped to the contour of the member by which means the cap or plate is held steadily upon the constructional member to be driven.

In some cases especially with concrete piles or constructional members cushioning means of the usual description may be provided for deadening the force of the blow, and for preventing the injury to the top of the member being driven. For this purpose, however, I prefer to adopt a special arrangement, providing a hole or holes in the top of the plate through. which sawdust or other suitable shock absorbing material may be inserted into the space coming above the top of the member to be driven, and preferably furnishing a thickness of some suitable material, such for instance as kamptulicon for holding the sawdust in position. Where a plate is provided in slidable connection to the top of the cap or its equivalent I prefer to so arrange that the sliding member when in position closes the hole or holes through which the sawdust or other shock absorbing material is inserted. Suitable lugs, bolts, holes or the like may be provided in connection with the device or devices for enabling them to be handled and transported withgreater facility. And in order that my said invention may be better understood I will now proceed to describe the same with reference to the drawing accompanying this specification, in which is shown by way of example three methods of constructing driving caps for constructional members according to my invention.

Figure 1 is a cross section of one form of the driving cap; Fig. 2 is a plan of same; Fig. 3 is a similar view to Fig. 1 of another form of the device; Fig. 4 is a cross section at right angles to Fig. 8; Fig. 5 is a cross section of a third form of the device.

Referring to the form of the device shown at Figs. 1 and 2, in this case the driving cap comprises a plate a with upward extending walls forming a box portion 6 of a suitable size to accommodate the ordinary dolly c which may be bolted in position. The position of the box portion of the driving memher is regulated according to the shape of the constructional member which it is intended to drive with the driving cap so that a blow delivered upon the dolly may be so communicated to the member to be driven that there is no tendency for such member to be forced out of the perpendicular. 03' are pieces of steel or other suitable material so shaped as to fit closely to the contour of the constructional member which is to be driven. e is a rib which is beveled 01f from the edge of the plate a to the side Wall of the box I in order to distribute the stress as required. {i are rings by means of which the cap can e easily transported and slung into position. I

Referring to the form of the device shown at Figs. 3 and 4 in this case the plate portion a is provided at the bottom with a projecting dove-tailed portion 9 which is adapted to slide into a correspondingly formed groove provided at the top of the plate It to which the fillets d are attached. Means areprovided for keeping the upper member in place after it has been slid into position which in the present case consists of'dove-tailed filling pieces 76, the whole being retained in position by means of a retaining plate m. Other means may be provided for moving and holding the upper member with respect to the lower member, such for example as a loosely fitting screw adapted to screw the projecting wedge-shaped portion into the correct position.

At Fig. 5 is shown a form of the device suitable for use with concrete piling. In this case the plate a, is provided with perforations a and the under side as well as the upper portion of the said plate is made boxshaped so that it is adapted to hold a quantity of sawdust p or other suitable filling material. The material is retained in posi tion by means of a sheet 9 of kamptulicon or other suitable material, which rests upon a ledge 1" at the bottom of the lower box like portion. The sawdust may be inserted through the holes 12 and rammed in position before the dolly is fixed into position in the upper box portion over such holes. This or a similar form of construction is particularly useful in connection with the driving of concrete piles or constructional members since a powerful blow can be delivered at the top of such member without the liability of breaking the concrete which generally occurs when such members are driven by means of an ordinary driving plate.

The particular construction of the device may be varied to suit requirements. In some cases one or both of the parts may be made in sections to be fitted together and in general the devices may be modified while re-' taining the principle of a driving cap or the like provided with recesses or fillets on the under side shaped to the contour of the constructional member or members to be driven, and so made or provided with means that the effect of the blow may be adjusted to come in a suitable position with respect to the member or members to be driven.

What I claim as my invention and desire to secure by Letters-Patent of the United States of America is g l. A cap for piles, comprising a dolly, a box formed in said cap adapted to receive said dolly, a blow transmitter formed on said cap, said box and its complemental dolly positioned non-symmetrical with respect to said driving means, substantially as and for the purpose set fort V V l 2. A cap for piles, comprising a dolly, a box slidably mounted in a transverse plane on said cap adapted to receive said dolly, a blow transmitter formed on the opposite side of said cap, said box and its complemental dolly adjustably positioned with respect to the cap, substantially as and for the purpose specified. w p 7 A cap for piles, comprising a dolly, a box formed in said cap adapted to receive said dolly, a blow transmitter formed in the opposite side of said cap, a sheet of kamptulicon, said blow transmitter forming a box, adapted to finally retain said kamptulicon, a filler positioned intermediate said cap and kamptulicon, substantially as described.

7 In testimony whereof, I affix my signa ture, in presence of two witnesses.

RICHARD HENRY ANNISON.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. C. 

